1. (2022九下·月考) 根据短文内容，从 A，B，C，D 四个选项中选出一个能正确填入相应空格内的最佳选项。

After school, everybody left the school and went home except Wang Yong. He was still outside the school gate. His mother usually came and took1home from school, but today, she was not there. Wang Yong 2 for 20 minutes and then he walked home alone.

When he got home, he knocked on the door 3 he did not have the key. To his surprise, on one answered the door. Wang Yong thought his mother was in the toilet, so he waited patiently. After a few 4, there was still no answer.

Wang Yong 5 again, but still no one answered the door. He didn't know what to do. Just then he heard the 6 voice of his neighbor, Li Ming. Li Ming's mother asked Li Ming to invite Wang Yong to stay in their house. Wang Yong and Li Ming played 7 till evening when Wang Yong's mother came back.

Wang Yong 8 Li Ming and his mother before he went back to his home. Wang Yong's mother explained that she had a headache and she had to see 9. From this experience, Wang Yong learned an important 10, "Neighbors should help each other"